7-S12
GR1600EC2, WSM
MOWER
[4] SERVICING
(1) Gear Box
Backlash between 17T Spiral Gear and 18 Spiral Gear
1. Remove the 18T spiral gear (6) from gear box.
2. Stick the strip of fuse the 18T spiral gear (6) with grease.
3. Reassemble the gear box.
4. Turn the input shaft (1).
5. Take out the fuses, and measure the thickness of fuses with an
outside micrometer. (Backlash equal thickness of fuse.)
6. If the backlash exceeds the allowable limit, adjust with shims (2),
(5).
(Reference)
• Thickness of adjusting shims
for 17T spiral gear (2) : 0.2 mm (0.0079 in.)
0.3 mm (0.0118 in.)
for 18T spiral gear (5) : 0.2 mm (0.0079 in.)
0.3 mm (0.0118 in.)
W1024471
Backlash between 17T
spiral gear and 18T
spiral gear
Factory spec.
0.13 to 0.25 mm
0.0051 to 0.0098 in.
Allowable limit
0.40 mm
0.0157 in.
(1) Input Shaft
(2) Shim (for 17T Spiral Gear)
(3) 17T Spiral Gear
(4) Output Shaft
(5) Shim (for 18T Spiral Gear)
(6) 18T Spiral Gear
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